Sitta carolinensis, commonly known as the White-breasted Nuthatch, is native to North America. Its geographical distribution covers a wide range across the continent, including the United States, southern Canada, and extends into northern Mexico. It is commonly found in both Eastern and Western parts of North America.

The White-breasted Nuthatch inhabits deciduous and mixed woodlands, particularly favoring mature forests with ample availability of oak and hickory trees. They are also found in wooded suburban areas and parks. This species prefers habitats that provide abundant tree cover and suitable nesting and foraging grounds.

The White-breasted Nuthatch plays a role as both a predator and seed disperser within its ecosystem. It primarily feeds on insects and seeds, climbing along tree trunks and branches to forage with its characteristic upward spiraling movements. The species is adapted to forest habitats, where it uses its strong bill to extract insects from bark and to open seeds. In winter, they exhibit more varied foraging behaviors and may join mixed-species flocks. Subspecies or regional adaptations can include slight variations in plumage or calls, but habitat preferences generally remain consistent.